H'ohk was a male Klingon who spent some time as a visiting professor at Starfleet Academy, during the mid-24th century, teaching Klingon physiology.

Among his students was Kathryn Janeway, who noted that he had required them all to have excellent recall of facts taught in class. This helped her to retain course content years later, allowing her to impress The Doctor when she anticipated his request for 10 ccs of alizine to treat B'Elanna Torres for anaphylactic shock. (VOY: "Darkling")

This character was only mentioned in dialogue.
According to the Starfleet Academy Handbook, his full name is H'okh, Son of G'nar.
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